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Author Marsh, D. B. ♦ Parris, P. E.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ LANTHANUM OXIDES ♦ SEEBECK EFFECT ♦ STRONTIUM OXIDES ♦ CHROMIUM OXIDES ♦ ELECTRIC CONDUCTIVITY ♦ TEMPERATURE DEPENDENCE ♦ ELECTRONIC STRUCTURE ♦ POLARONS
Abstract We consider the Seebeck coefficient in LaCrO{sub 3} and related transition-metal-oxide perovskites using a model for electronic conduction based on the electronic structure of the 3{ital d} orbitals of the {ital B}-site transition-metal cations. Relations for the Seebeck coefficient are presented for those perovskite systems in which electronic conduction is through the {ital t}{sub 2{ital g}} states of the {ital B}-site transition-metal cations. High- and low-temperature limits for the Seebeck coefficient are identified for the cases of both strong and weak magnetic coupling between electron spins. In these high- and low-temperature limits, the Seebeck coefficient is determined as a function of carrier concentration. Results are applied to an analysis of experimental data for the (La,Sr)CrO{sub 3} series. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 11


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